Details

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Graphics Processor

Parameter	Description
Part Number	UPD7228AG
Function	4-Bit CMOS Microprocessor
Manufacturer	NEC
Package Type	PDIP
Pin Count	16
Operating Voltage (Vcc)	5V 卤 5%
Temperature Range	-20掳C to +85掳C
Clock Frequency	Up to 2 MHz
Data Bus Width	4-bit
Address Bus Width	16-bit

Instructions for Use:

1. Power Supply:

   • Connect Vcc to pin 16 and GND to pin 8.
   • Ensure the supply voltage is within the specified range of 5V 卤 5%.

2. Clock Signal:

   • Apply a clock signal to pin 9 (X1) and optionally connect an external crystal or oscillator between X1 and X2 (pin 10).

3. Reset Input:

   • Pin 15 (RST) can be used to reset the processor. A high level on this pin will reset the CPU.

4. Data and Address Buses:

   • The data bus (D0-D3) is available on pins 1-4.
   • The address bus (A0-A15) is multiplexed over pins 5-14.

5. Control Signals:

   • Control signals such as Read/Write, Memory Request, and Interrupt should be connected according to the specific application requirements.

6. Programming and Operation:

   • Refer to the detailed programming manual for instructions on setting up memory maps, handling interrupts, and executing instructions.

7. Handling Precautions:

   • Handle with care to avoid static damage; use anti-static precautions.
   • Ensure proper heat dissipation if operating at higher frequencies or in high ambient temperatures.

For more detailed specifications and advanced usage, refer to the official datasheet provided by NEC.

(For reference only)